Vertical clock



FIG. 1 is a front elevational view of a vertical clock showing my new design displaying a time of 6:45.08 O'Clock;

FIG. 2 is a right side elevational view thereof, the left side being a mirror image thereto;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof; and,

FIG. 5 is a rear elevational view thereof. 

I claim the ornamental design for the vertical clock, as shown and described. 